<template>
  <div>
    <el-badge :hidden="!showBadge" v-bind="badgeConfig">
      <div v-if="isExternal" :style="styleExternalIcon" class="svg-external-icon svg-icon" v-on="$listeners" />
      <svg v-else :title="$attrs.title" :style="baseStyle" :class="svgClass" aria-hidden="true" v-on="$listeners">
        <use :xlink:href="iconName" />
      </svg>
    </el-badge>
  </div>
</template>

<script>
export default {
  name: "EvSvgIcon",
  props: {
    iconClass: {
      type: String,
      required: true,
    },
    className: {
      type: String,
      default: "",
    },
    width: {
      type: String,
      default: "20px",
    },
    height: {
      type: String,
      default: "20px",
    },
    showBadge: {
      type: Boolean,
      default: false,
    },
    badgeConfig: {
      type: Object,
      default: () => {
        return {
          isDot: true,
        };
      },
    },
  },
  computed: {
    baseStyle() {
      return {
        width: this.width,
        height: this.height,
      };
    },
    isExternal() {
      const hasExternal = /^(https?:|mailto:|tel:)/.test(this.iconClass);
      return hasExternal;
    },
    iconName() {
      return `#icon-${this.iconClass}`;
    },
    svgClass() {
      if (this.className) {
        return "svg-icon " + this.className;
      } else {
        return "svg-icon";
      }
    },
    styleExternalIcon() {
      return {
        mask: `url(${this.iconClass}) no-repeat 50% 50%`,
        "-webkit-mask": `url(${this.iconClass}) no-repeat 50% 50%`,
      };
    },
  },
};
</script>

<style scoped>
.svg-icon {
  vertical-align: -0.15em;
  fill: currentColor;
  overflow: hidden;
}

.svg-external-icon {
  background-color: currentColor;
  mask-size: cover !important;
  display: inline-block;
}
</style>
